August weather forecast
Pevely, MO

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Weather in August

The last month of the summer, August, is another tropical month in Pevely, Missouri, with temperature in the range of an average low of 66.4°F (19.1°C) and an average high of 86.2°F (30.1°C).

Temperature

Pevely experiences an average high-temperature of a still tropical 86.2°F (30.1°C) in August, marking an insignificant shift from 88°F (31.1°C) in July. Pevely encounters an average low-temperature of 66.4°F (19.1°C) during August nights.

Heat index

During August, the heat index is calculated to be a fiery hot 98.6°F (37°C). Take more safety measures, heat exhaustion and heat cramps are potential outcomes. Persistent activity might lead to heatstroke.
It is noted that heat index values are ascertained for locations in the shade and with gentle breezes. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'feels like' or 'felt air temperature', unifies temperature and humidity readings to offer a comprehensive feel of warmth. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Young ones often ignore the need to take a break and drink fluids. Thirst is a late-stage symptom of dehydration - hence, maintaining hydration, particularly during extended physical activities, is crucial.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. When heat uptake goes beyond the body's cooling mechanisms, there's a surge in body temperature, posing health risks.

Humidity

The average relative humidity in August is 75%.

Rainfall

In August, the rain falls for 14.6 days. Throughout August, 3.43" (87mm) of precipitation is accumulated. Throughout the year, there are 155 rainfall days, and 34.92" (887mm) of precipitation is accumulated.

Snowfall

April through October are months without snowfall.

Daylight

In Pevely, the average length of the day in August is 13h and 36min.
On the first day of August in Pevely, sunrise is at 6:04 am and sunset at 8:11 pm. On the last day of the month, sunrise is at 6:30 am and sunset at 7:32 pm CDT.

Sunshine

In Pevely, the average sunshine in August is 10.3h.

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: The maximum UV index, 6 during August, leads to the following recommendations:
Take precautions against overexposure. Protection against sun damage is needed. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Updated: Jun 15, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot does it get in August?

The average high-temperature, in August, in Pevely, is 86.2°F (30.1°C), while the average low-temperature is 66.4°F (19.1°C). In August, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which combines air temperature and relative humidity, is calculated to be 98.6°F (37°C).

What is the average humidity in August?

In August, the average relative humidity is 75%.

How many days does it rain in August?

In Pevely, in August, during 14.6 rainfall days, 3.43" (87mm) of precipitation is typically accumulated.

When it does not snow?

In Pevely, snow does not fall in April through October.

How many hours of daylight does Pevely have in August?

The average day length in August in Pevely is 13h and 36min.

When is the sunrise / sunset in August?

On the first day of August, sunrise is at 6:04 am and sunset at 8:11 pm. On the last day of the month, sunrise is at 6:30 am and sunset at 7:32 pm CDT.

How many hours of sunshine does Pevely have in August?

The average sunshine duration in August is 10.3h.

What is the month with the highest UV index?

May through August, with an average maximum UV index of 6, are months with the highest UV index.

What is the UV index intensity in August?

In Pevely, the average daily maximum UV index in August is 6. A UV Index value of 6 to 7 symbolizes a high health threat from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Pevely, MO

Average temperature in August - Pevely, MO
  • Average high temperature in August: 86.2°F

The warmest month (with the highest average high temperature) is July (88°F).
The month with the lowest average high temperature is January (39°F).

  • Average low temperature in August: 66.4°F

The month with the highest average low temperature is July (68.2°F).
The coldest month (with the lowest average low temperature) is January (25.2°F).

Average pressure in August
Pevely, MO

Average pressure in August - Pevely, MO
  • Average pressure in August: 29.97"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

Average wind speed in August
Pevely, MO

Average wind speed in August - Pevely, MO
  • Average wind speed in August: 5.2mph

The windiest month (with the highest average wind speed) is January (9mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).

Average humidity in August
Pevely, MO

Average humidity in August - Pevely, MO
  • Average humidity in August: 75%

The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (72%).

Average rainfall in August
Pevely, MO

Average rainfall in August - Pevely, MO
  • Average rainfall in August: 3.43"

The wettest month (with the highest rainfall) is May (4.25").
The driest month (with the least rainfall) is February (1.97").

Average rainfall days in August
Pevely, MO

Average rainfall days in August - Pevely, MO
  • Average rainfall days in August: 14.6 days

The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is January (8.2 days).

Average snowfall in August
Pevely, MO

Average snowfall in August - Pevely, MO
  • Average snowfall in August: 0"

The month with the highest snowfall is January (2.36").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in August
Pevely, MO

Average snowfall days in August - Pevely, MO
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (6.8 days).
The months with the least snowfall days are April, May, June, July, August and September (0 days).

Average daylight in August /
Average sunshine in August
Pevely, MO

Average daylight in August / Average sunshine in August - Pevely, MO
  • Average daylight in August: 13h and 4min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in August: 10h and 2min

The months with the most sunshine are June and July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 48min).

Average sunshine days in August
Pevely, MO

Average sunshine days in August - Pevely, MO
  • Average sunshine days in August: 13.8 days

The month with the most sunshine days is December (19.2 days).
The month with the least sunshine days is July (10.7 days).

Average UV index in August
Pevely, MO

Average UV index in August - Pevely, MO
  • Average UV index in August: 6

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in August
Pevely, MO

Average cloud cover in August - Pevely, MO
  • Average cloud cover in August: 28

The month with the most cloud cover is January (Cloud cover 49).
The months with the least cloud cover are June, July and August (Cloud cover 28).

Average visibility in August
Pevely, MO

Average visibility in August - Pevely, MO
  • Average visibility in August: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

Pevely, Missouri, USA

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